CCNP路由试题101题

517408378

这一题为什么选B，有点不明白
After implementing EIGRP on your network, you issue the show ip eigrp traffic command on router C. The
following output is shown
RouterC#show ip eigrp traffic
IP-EIGRP Traffic Statistics for process 1
Hellos sent/received: 2112/2076
Updates sent/received: 47/38
Queries sent/received: 5/3
Replies sent/received: 3/4
Acks sent/received: 29/33
Input queue high water mark 2, 0 drops
SIA-Queries sent/received: 0/0
SIA-Replies sent/received: 0/0

Moments later, you issue the same command a second time and the following output is shown:
RouterC#show ip eigrp traffic
IP-EIGRP Traffic Statistics for process 1
Hellos sent/received: 2139/2104
Updates sent/received: 50/39
Queries sent/received: 5/4
Replies sent/received: 4/4
Acks sent/received: 31/37
Input queue high water mark 2, 0 drops
SIA-Queries sent/received: 0/0
SIA-Replies sent/received: 0/0

Moments later, you issue the same command a third time and the following output is shown:
RouterC#show ip eigrp traffic
IP-EIGRP Traffic Statistics for process 1
Hellos sent/received: 2162/2126
Updates sent/received: 53/42
Queries sent/received: 5/5
Replies sent/received: 5/4
Acks sent/received: 35/41
Input queue high water mark 2, 0 drops
SIA-Queries sent/received: 0/0
SIA-Replies sent/received: 0/0

What information can you determine about this network? Select the best response.
A. The network is stable.
B. There is a flapping link or interface, and router C knows an alternate path to the network.
C. There is a flapping link or interface, and router C does not know an alternate path to the network.
D. EIGRP is not working correctly on router C.
E. There is not enough information to make a determination.

Answer: B
题库解析说，会查询包和回复包的数目一直在改变，证明网络处于抖动状态。但是我想应该选C吧，router c 应该不知道替换路径

乱了江湖

为什么是不知道 其他路径呢  路由的抖动状态 以EIGRP 来说  其实就是后继不稳定 一时down  一时 up

517408378

乱了江湖 发表于 2013-7-26 15:49
为什么是不知道 其他路径呢  路由的抖动状态 以EIGRP 来说  其实就是后继不稳定 一时down  一时 up

不是在EIGRP路由表中连FS都没有才发送请求包吗？这里的其他路径是指FS还是路由表中其它的路径